Involvement of the organics in aqueous phase of bio-oil in hydrothermal carbonization of lignin

Lin, Haisheng; Li, Qingyin; Zhang, Shu; Zhang, Lijun; Hu, Guangzhi; Hu, Xun

doi:10.1016/j.biortech.2022.127055

Cited by 21 publications

(3 citation statements)

References 34 publications

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“…The precipitated lignin pretreated by adjusting the pH of black liquor to about 2.0 generated the bio-oil with mainly S-type (syringyl) and G-type (guaiacyl) phenolics resisting the demethoxylation and demethylation compared to those of the lignin from black liquor . Additionally, the aqueous phase of bio-oil could be recycled in the HTC process for enriching the production of hydrochar by cross-polymerization of lignin derivatives . Apart from the bio-oil collected from liquid phase, lignin-derived graphene quantum dots were also identified and used for various applications such as photocatalysis, pollutants detection, and nanoprobes .…”

Section: Hydrothermal Treatment Of Model Compounds To Chemicals Fuels...mentioning

confidence: 99%

Hydrothermal Treatment of Biomass Feedstocks for Sustainable Production of Chemicals, Fuels, and Materials: Progress and Perspectives

et al. 2023

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Hydrothermal process is an emerging technology that contributes to sustainable production of biomass-derived chemicals, fuels, and materials. This technology uses hot compressed water to convert various biomass feedstocks including recalcitrant organic compounds in biowastes into desired solid, liquid, and gaseous products. In recent years, considerable progress has been made in the hydrothermal conversion of lignocellulosic as well as nonlignocellulosic biomass to value-added products and bioenergy to fulfill the principles of circular economy. However, it is important to assess hydrothermal processes in terms of their capabilities and limitations from different sustainability aspects so that further advances can be made toward improvement of their technical maturity and commercialization potential. The key aims of this comprehensive review are to (a) explain the inherent properties of biomass feedstocks and physio-chemical characteristics of their bioproducts, (b) elucidate related transformation pathways, (c) clarify the role of hydrothermal process for biomass conversion, (d) evaluate the capability of hydrothermal treatment coupled with other technologies for producing novel chemicals, fuels and materials, (e) explore different sustainability assessments of hydrothermal processes for potential large-scale applications, and (f) offer our perspectives to facilitate the transition from a primarily petro-based to an alternative biobased society in the context of changing climate.

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Section: Hydrothermal Treatment Of Model Compounds To Chemicals Fuels...mentioning

confidence: 99%

Hydrothermal Treatment of Biomass Feedstocks for Sustainable Production of Chemicals, Fuels, and Materials: Progress and Perspectives

et al. 2023

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“…Many studies have been carried out using biomass in different reaction media to confirm the reaction chemistry governing their conversion to hydrochar [ 7 , 45 , 46 , 47 ]. It is believed that hydrolysis reaction dominates the HTC process in non-polar water media and results in the cleavage of hydrogen bonds.…”

Section: Fundamentals Of Hydrothermal Carbonization Processmentioning

confidence: 99%

Hydrothermal Conversion of Food Waste to Carbonaceous Solid Fuel—A Review of Recent Developments

Khan

Hameed

Siddiqui

et al. 2022

Foods

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This review critically discussed recent developments in hydrothermal carbonization (HTC) of food waste and its valorization to solid fuel. Food waste properties and fundamentals of the HTC reactor were also covered. The review further discussed the effect of temperature, contact time, pressure, water–biomass ratio, and heating rate on the HTC of food waste on the physiochemical properties of hydrochar. Literature review of the properties of the hydrochar produced from food waste in different studies shows that it possesses elemental, proximate, and energy properties that are comparable to sub-bituminous coal and may be used directly as fuel or co-combusted with coal. This work conclusively identified the existing research gaps and provided recommendation for future investigations.

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“…37 Lin et al used bio-oil as a medium for hydrothermal carbonization of lignin and investigated the effect of organic matter in bio-oil on hydrothermal coking properties. 38 Friederici et al investigated the effect of eutectic salt mixtures on coke conversion by hydrothermal carbonization of Kraft lignin and mixed pyrolysis of the obtained hydrochar with the feedstock, revealing the typical characteristics of the material. 39 Although HTC technology is a wet process technology good at treating wet wastes, particularly ideal for processing "black liquor" from mills, pulp and waste straw.…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of Fenton pretreatment and hydrothermal carbonization of lignin on the physicochemical properties of the resulting hydrochar

Fu,

Bai,

Chi

et al. 2023

Green Chem.

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Involvement of the organics in aqueous phase of bio-oil in hydrothermal carbonization of lignin

Cited by 21 publications

References 34 publications

Hydrothermal Treatment of Biomass Feedstocks for Sustainable Production of Chemicals, Fuels, and Materials: Progress and Perspectives

Hydrothermal Treatment of Biomass Feedstocks for Sustainable Production of Chemicals, Fuels, and Materials: Progress and Perspectives

Hydrothermal Conversion of Food Waste to Carbonaceous Solid Fuel—A Review of Recent Developments

Synergistic effect of Fenton pretreatment and hydrothermal carbonization of lignin on the physicochemical properties of the resulting hydrochar

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